ocfs2: replace CURRENT_TIME macro

CURRENT_TIME is not y2038 safe.

Use y2038 safe ktime_get_real_seconds() here for timestamps.  struct
heartbeat_block's hb_seq and deletetion time are already 64 bits wide
and accommodate times beyond y2038.

Also use y2038 safe ktime_get_real_ts64() for on disk inode timestamps.
These are also wide enough to accommodate time64_t.

Link: http://lkml.kernel.org/r/1475365298-29236-1-git-send-email-deepa.kernel@gmail.com
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 6 insertions, 4 deletions

diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 636abcbd4650..9158c9825094 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -741,7 +741,7 @@ static inline void o2hb_prepare_block(struct o2hb_region *reg,
         hb_block = (struct o2hb_disk_heartbeat_block *)slot->ds_raw_block;
         memset(hb_block, 0, reg->hr_block_bytes);
         /* TODO: time stuff */
-        cputime = CURRENT_TIME.tv_sec;
+        cputime = ktime_get_real_seconds();
         if (!cputime)
                 cputime = 1;
 
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index c56a7679df93..382401d3e88f 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -703,7 +703,7 @@ static int ocfs2_remove_inode(struct inode *inode,
                 goto bail_commit;
         }
 
-        di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec);
+        di->i_dtime = cpu_to_le64(ktime_get_real_seconds());
         di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL));
         ocfs2_journal_dirty(handle, di_bh);
 
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 8d887c75765c..3b0a10d9b36f 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -516,6 +516,7 @@ static int __ocfs2_mknod_locked(struct inode *dir,
         struct ocfs2_extent_list *fel;
         u16 feat;
         struct ocfs2_inode_info *oi = OCFS2_I(inode);
+        struct timespec64 ts;
 
         *new_fe_bh = NULL;
 
@@ -564,10 +565,11 @@ static int __ocfs2_mknod_locked(struct inode *dir,
         fe->i_last_eb_blk = 0;
         strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
         fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL);
+        ktime_get_real_ts64(&ts);
         fe->i_atime = fe->i_ctime = fe->i_mtime =
-                cpu_to_le64(CURRENT_TIME.tv_sec);
+                cpu_to_le64(ts.tv_sec);
         fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
-                cpu_to_le32(CURRENT_TIME.tv_nsec);
+                cpu_to_le32(ts.tv_nsec);
         fe->i_dtime = 0;
 
         /*